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Advisory record · GHSA-q6gh-6v2r-hjv3

Micronaut: DefaultHttpClient follows redirects, forwarding Authorization, Cookie, and Proxy-Authorization headers

CVSS 6.8 Medium

Published by the GitHub Advisory Database at 9 Jul 2026, 13:36 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
io.micronaut:micronaut-http-clientMaven>=1.2.8, <3.10.6 || >=4.0.0-M1, <4.10.24 || >=5.0.0-M1, <5.0.13.10.6, 4.10.24, 5.0.1
Identifiers
GHSA-q6gh-6v2r-hjv3
Published
9 Jul 2026
Updated
10 Sept 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

The Maven package io.micronaut:micronaut-http-client is affected in versions from 1.2.8 before 3.10.6, from 4.0.0-M1 before 4.10.24, and from 5.0.0-M1 before 5.0.1. Its HTTP client follows redirects and forwards Authorization, Cookie, and Proxy-Authorization headers to redirect targets on other domains, and it has no maximum redirect count. The source does not describe what an attacker needs to trigger this. Upgrade to 3.10.6, 4.10.24, or 5.0.1, depending on your major version. The source lists no workarounds.

Written 2 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
6.8 Medium 3.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N GitHub Advisory Database
  • CISA KEV Not listed.
  • EPSS No score.

Timeline

  1. 31 Oct 2026, 14:16 UTC First seen by agentprime
  2. 31 Oct 2026, 14:16 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.